Turbo's and Emissions
Discussion
Shameless Punt but if you are after a Turbo Charged Chimaera this one is mint
https://www.pistonheads.com/classifieds/used-cars/...
https://www.pistonheads.com/classifieds/used-cars/...
sapper said:
Shameless Punt but if you are after a Turbo Charged Chimaera this one is mint
https://www.pistonheads.com/classifieds/used-cars/...
A very nice car Mick. May I suggest you add a couple of engine bay shots.https://www.pistonheads.com/classifieds/used-cars/...
SteveR1979 said:
How are people getting through MOT's when they have turbos fitted??
The same as most TVRs or similar cars with aftermarket modified exhausts, cheat (or bend the rules in your favour, whatever term you prefer) by finding a friendly MOT man or make the exhaust so a catalytic converter can be installed and removed once per year. If you have an aftermarket ECU Another option may be to take a leaf out of the VW book of play and adjust the ECU map settings for the MOT test.
I have a canems aftermarket ECU and the emissions were 'marginal' at last MoT. 
Without my own gas analyser and some trial and error, I'm not sure how to make it MoT friendly (laptop plugs in and many things can be changed). I could create an MoT map but the only thing I think may work without rolling road / professional setup would be to drop the idle speed perhaps. It's set to 950 rpm at the moment.
Without my own gas analyser and some trial and error, I'm not sure how to make it MoT friendly (laptop plugs in and many things can be changed). I could create an MoT map but the only thing I think may work without rolling road / professional setup would be to drop the idle speed perhaps. It's set to 950 rpm at the moment.
SteveR1979 said:
So I've been looking at options for my Chim, and of course superchargers and turbos are on the list.
How are people getting through MOT's when they have turbos fitted?? As you lose the Y piece you can't just swap it out come MOT time, so what are people doing??
Ta!
Even without the cats, the emissions were not that far out on mine. As said, need to find an understanding MOT garage or modify the exhaust and have some sports cats fitted. You don't want to restrict the exhaust gas if at all possible.How are people getting through MOT's when they have turbos fitted?? As you lose the Y piece you can't just swap it out come MOT time, so what are people doing??
Ta!
I had to have my Cat Y piece refitted for this year's MOT .... I think the new rules might have made the testers less happy to do favours.
Even with the Cat Y piece back in it was a real struggle to get the emissions down to the permitted levels.
At least I now have an MOT Map for next year.
For info mine's Supercharged with no Pre-Cats
Even with the Cat Y piece back in it was a real struggle to get the emissions down to the permitted levels.
At least I now have an MOT Map for next year.
For info mine's Supercharged with no Pre-Cats
sgrimshaw said:
I had to have my Cat Y piece refitted for this year's MOT .... I think the new rules might have made the testers less happy to do favours.
what new rules? I know about the minor, major and dangerous classification not aware of emission changes, unless emission failure counts as dangerous and that means it must be taken off the road,,,,,, please save me!The UK has one of the lowest accident rates in the world. The biggest reason for accidents isn't emissions or leaking PAS hoses but drink driving or using your bloody phone at the wheel. Bureaucratic muppets!
Edited by Chimp871 on Wednesday 26th September 15:09
Edited by Chimp871 on Wednesday 26th September 15:12
If parts of the emission control system have been removed, it should fail the MoT (if they notice of course!) even if below the exhaust gas test.
It's more aimed at the removal of EGRs and DPFs on diesel cars which can cause many problems (I had nothing but problems with the EGR on a Fiat multijet myself). You'll see companies advertising bypassing or blanking them off now whereas before they just removed it.
By extension, I presume that the removal of a catalytic converter on a petrol car that was built with one fitted is a similar 'fail.'
I'm curious how to 'tweak' a map to reduce emissions. Do I access my canems ECU and increase the advance across the boards to make it leaner and hence, cleaner?
It's more aimed at the removal of EGRs and DPFs on diesel cars which can cause many problems (I had nothing but problems with the EGR on a Fiat multijet myself). You'll see companies advertising bypassing or blanking them off now whereas before they just removed it.
By extension, I presume that the removal of a catalytic converter on a petrol car that was built with one fitted is a similar 'fail.'
I'm curious how to 'tweak' a map to reduce emissions. Do I access my canems ECU and increase the advance across the boards to make it leaner and hence, cleaner?
Edited by ianwayne on Wednesday 26th September 16:34
Chimp871 said:
what new rules? I know about the minor, major and dangerous classification not aware of emission changes, unless emission failure counts as dangerous and that means it must be taken off the road,,,,,, please save me!
https://www.gov.uk/government/news/mot-changes-20-may-2018Failure of the emission test is an MOT failure, so the car should be off the road until the test is passed .. don't think that's new though:
https://www.gov.uk/emissions-testing
Edited by sgrimshaw on Wednesday 26th September 17:03
ianwayne said:
I'm curious how to 'tweak' a map to reduce emissions. Do I access my canems ECU and increase the advance across the boards to make it leaner and hence, cleaner?
You'll need access to a gas tester.My fueling map was changed to lean off around the idle rpm, ignition map was unchanged.
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